Planing-machine



7 Sheets-Sheet 1.

(No Model.) l

S. A. WOODS.

PLANING MACHINE.

Patented Jun-e 14, 1887.

N, FETERS Pilota-Lithag'npher. Washirljnn, P. C.

(No Model.) 'z shetssheet 2,.

s. Agwoons.' l PLANING MACHINE. Y

No. 364,748. vPatented June 14, 1887.

(No Model.) 7 Sheets-Sheet 3.

s. A. WOODS PLANING MACHINE.

PatentedJune 14,1887.l

(No Model.) I Y y "z sheets-sheet 4.Y

. S. A. WOODS.

PLANING MAGHINE. No. 364,743. Patented June 14.1887.

//V VEN TOI? (No Model.) 7 Sheets-Sheet 5; S. A. WOODS.

PLANINGMAGHINB. No. 364,143. Patgnted June 14, 1887.

(No Model.) '7 Sheets-Sheet 6.

S. A; WOODS. PLANING MACHINE.

Patented 111116.14

` W/.TNESSES (No Model.) 7 sheets-sheet 7,

s. J4. WOODS.` PLANING MACHINE.

No. 364,743. n PatentedJune 14, 1887.

u Pneus. Phmummp. wnhingm ne PATENT Finca.

SOLOMON A. WOODS, OF'BOsTON, MAsSAOHUsnTTs.

PLANING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 364,743, dated June 14, 1887.

lApplication filed February 2, 188'?. Serial No. 226,214. (No model.)

To all whom, t may concern:

Be it known that I, SOLOMON A. VooDs, of Boston, in the county of VSuffolk and State of Massachusetts, have invented a certain new and usefulImprovement in Planing-Machines,

of which the following is a specification.

My improvement relates to machines for planing and preparing lumber; and it consists in certain new and useful constructions and combinations of the parts of the same, substantiall y as hereinafter described and claimed.

In the drawi ngs,Figure 1 is atop plan view of ol' a planingmachine constructed with my i1nprovements. Fig.2isalongitiidinalvertical section ofthe same. Fig.3 is a side elevation of the same. Fig.4 is atop plan view ofthe same,similar to Fig. lin general construction,but with a different arrangement of the side or matching cutters in having both adjustable toward the central guide and the guide made tapering. Fig. 5 is an enlarged view ofa portion of Fig.v 4, showing vthe details of its mechanism and having only a Single central cutter applied on one side Iof t-he central guide. Fig. 6 is a side elevation of Fig. 5 with the frame-work of the upper feedrolls and gears of the upper and lower feed-rolls removed for the sake of clearness of illustration. Fig. 7 is av transverse View of Fig. 5 on the dotted line z z. Fig. 8 is a similar transverse view of the like parts with the matching-cutters arranged asshown in Fig. 1. Fig. 9 is a top plan View of the planing-machine shown in Figs. 1 and 4, with a modified arrangement of the matching-cutters and central guide. Fig. 10 isa transverse section of thesame at the corresponding place and showing the corresponding parts to Fig. 7. Figs. 11 and -12 show a longitudinal section and an end view ofdetails of Figs. 1 and 4 enlarged. of one of the cutters shown n Fig. 8 with a portion of the board being worked and the central and outer guides. Fig. 14 is a transverse section of Fig. 13 onthe dotted line'yy. Figs. 15 and 16 are detail side and end views of parts of the machine, showing one method of securing the central guide-strip in place.. Fig. 17 and 18 are similar views of the same details, showing anotherway of securing said guide-strip. Fig.19.1sa transverse vertical section across Fig. 4, 1n front of the rst pair of feed-rolls, showing the upper rolls in soc- Fig. 13 is a detail top plan View tion,with their mode of attachment to the central hanger. Fig. 2O is a detail view of part of Fig. 19. f

The planing-machine in question is what is commonly known as a duplex planer-that is, one in which two boards can be dressed and matched at the saine time-but it is so constructed as to be altered into a single planer, capable of receiving, dressing, and matching one wide board by removing the duplex attachments out of the way. My improvements are designed to facilitate this transformation from a duplex to a single machine, or vice versa, and to increase the breadth of the parts of the duplex bed in proportion to the breadth of the whole bed, and to simplify the adjustment of the several parts for performing work on two boards at once.

A is the frame of the machine. The top a', fced-rolls a? ai fr, and their driving-countershafts, gears, Abed-plates, and other similar parts connected therewith are of the wellknown construction and" do not require further description, eXcept that the top rolls of the first two pairs of rolls aredivided in the middle inoue modification, and each half of the top roll, 20 and 2l, is hung upon a sepa- 'rate shaft, which is journaled at its inner end crossgirt 22, as shown in Figs. 4, 9, 19, and 20. rllhe box h is pressed downin the hanger by a spiral springJ. This modification of the construction of the feed-rolls, taken by itself, is, however, also well known, and I only claim the same in connection with the tonguing cutters and other features, as hereinafter set forth in the claims.

In order to provide for the tonguing and matching ofthe lumber as it is run through the machine, when it is used as a single machine, two upright cutter heads, c c', are mounted in the frame of the machine in the customary manner and providedwith tonguing and grooving cutters. The cutter head c is connected to the side guides, c2 ci, and the by the shaft ci* in the manner shown and described in the patent granted to S. A.; Woods, October 19, 1886, No. 351,303. The shaft ciis operatedby a crank upon the end of it upon one side of the machine, and in order to fawhole of them are adj usted across the machine planing-cylinder, a, bottom planing-cylinder,

in a box h', in hanger 71y de endin(y from the IOO ' from the planed toward the unplaned portion of the stock, andV thus when the. cutter projects vertically downward it cuts aneven depth from point to heel off the edge of the board, but as it progresses toward the point where it leaves the board the inclined position 4of the latter to the axis ofthe cutter causes its outer end to cut deepest.

e c are the horizontal shafts, having pulleys p and p upon their outer ends, bywhich they are driven from the pulleys 192 and p, attached to countershafts near the end of the machine. The shaft e is mounted in a box or boxes, b, attached to the plate b. This plate 4slides horizontally to and fro in guideways upon a plate, b2, and the plate b2 slides up and down on guideways b3 b, which are upright bars atta'ched together in the form of a bracket, b4, and to the frame of the machine. Theplates b and b2 and guideways are attached together by the usual undercut or dovetail construction of slides, which are well understood and shown in Fig. 5. these attached parts, is above the bed of the machine over which the lumber traverses. The plate b has an ear, n, attached-to it, and the plate b2 has another ear, n2, attached to it, and a screw, a3, havingfa hand-wheel on its outer end, is j ournaled in the earnZ and fitted to a threaded hole in the ear n. By this means the plate b can be moved horizontally on the plate bz to adj ust the cutters of the cutter-head to their proper positions with relation to the guide D. On the inner end of the shaft c is the cutter-head ez, which is made long enough to have the cutters c13 and cM attached thereto by bolts c12 c, which are tapped into the eutter-head, the body of the bolts passing through slots in the cutters, as shown. The lower shaft, e', is provided on its inner end with a similar 4cutter-head provided with similar cutters, c13 c, secured to it in like manner. The bracket b4 is attached tothe crossgirt d (which is bolted to the frame of thev machine) by guideways, on the girt, on which the bracket b* is fitted to slide transversely of the machine, and au ear, d', is attached to the cross-girt d, and has journaled in it a screw, n, having a hand-wheel upon its outer end. This screw n4 is tapped into a hole in the bracket bt, and thereby the entirebracket is adj usted upon the eross-girt el transversely of the machine, the bracket b4 having a horizontal extension resting upon the top of through .in working upon the lumber. The

-v bracket b4 has its horizontal part projecting for some distance on the rear side ofthe crossgirt d,and on that sideis provided with adown- This upper shaft, c, with ward extension supporting vertical guideways b3 b3, similar to those on its upper portion.

The shaft c is supported in a box or boxes, b, upon a plate, b, which moves up and down on the-lower guideways, b3 b3, of the bracket b4. A slot is cut through the lower extension of the bracket 0*, and an ear, bi, (shown in dotted lines in Fig. 6,) is attached to the plate 11G and extends through this slot toward the front end of the machine. A shaft, s, is journaled vertically in the bracket btfand extends downward from above its upper end through thebracket and through the ear bi. This shaft is screw-threaded at its lower end and fits a corresponding screw-thread in the ear. By turning it the plate b is adjusted up and down upon the .bracket b". An ear, b5, projecting outward in the same direct-ion from the plate b2, between the upper guideways, b3 b, has a shaft, s',journaled in the bracket b* and eX- tending down through it. This shaft is prowhere it passes through the latter ear, fitted to a corresponding screw-thread in the ear, and the plate b2 is thus adjusted by turning lthis shaft s up and down 011 the upper guideways, b, of the bracket b".

The shaft s has a pinion, s, attached to its upper end, and the shaft s a pinion, si. A crank, s2, has attached to it a sleeve and pinion, which revolve upon a pin projecting from the upper side of tbe bracket b", and the pinion meshes with the pinions 83s". By turning this crank the upper and lower cutter-heads on the shafts c c' are brought nearer together or separated more widely to adjust them to the different lengths of cut-ters and thickness of material to be tongued. The central guidestrip, D, is cut away where the cutters c13 c of the upper cutter-head and the corresponding cutters of the lower cutter-heads pass by it. It will be observed that when the lumber is pressed aga-inst the central guide, D, by the draft of the feed-rolls acting against the guiding-edges, as shown in Figs. 8 and 10, when passing these cutters, the cutters, especially when the guide-strip is made tapering, act principally upon the upper and lower faces of the tongues and merely true the edges of them, and the vcentral guide-strip, D, may be used to direct the board to the cutters in this mauner, it' desired; but I prefer to use itas shown in Fig. 7, where the cutter c13 and its corresponding cutter of the lower head are so placed and the guides so arranged that the lumber is pressed against the side guides, c2 c, by slightly angling the side guide, for instance, and the tongue cutters are formed, as shown, so as not only to dress the tongue, but to gage the breadth ofthe lumber by cutting off its inner edge, so that it may pass snugly between the portion of the central guide, D, on the feedout side of the tonguing-cutters and the opposite side guide, cL c, and so be held firmly against the action of the grooving-cutter head c by the central guide opposite to the latter. The tonguing-cutters are thus made to perform the dual function of forming the tongue and gaging the breadth of the lumber to accu rately passbetween the central and side guides, and the portion ofthe central guide which the lumber' meets after passing the tonguing-cutters `is made slightly wider than the portion preceding these cutters, to correspond with theamount cut from the edge of the tongningcutters, as shown in Fig. 13.

Instead of using the eutterlnads upon the horizontal shafts c c to cut the tongues upon both boards which are being fed through the machine upon each side of the central guide, they may be used with cutters upon only one side, of that guide, as shown in Figs, 5, 7, t), and l0. In the two former the tionguingcub ters are mounted upon the horizontal heads upon the side of the central guide next the side guides, cl c, and in the two latter upon thel opposite side. In each case the central guide is made somewhat wider at the feed-out end of the machine, to enable it to act as a guide on both sides to the boards passing ont, than lneviously described, and a central vertical tonguinghead, C", of ordinary construction, is mounted opposite the cntteikheads e c', to cut the tongue upon the side ofthe central guide on which the tongningcutters on the herr/:oir tal heads of shafts c c' are omitted. I thus pro vide a series of tonguing and grooving cutters adapted to operate upon the opposite sides of two boardsindependently of each other, and each set ofeutters of the series cutting from the planed toward the unplaucd portion oi' the board, and leave a wider space upon the bed ot` the machine than when separate vertical tonguing and grooving cutter-heads are employed to tongue and groove two boards at once, with their cutters cutting in a similar direction. I prefer, however, to produce the tongues upon both boards, as shown in Figs. l and S, by the horizontal cutter-heads.

\Vhen employed with the central vertical cutter head, C, operating upon the side of the central guide next the side guides, oZ e, the central guide-strip, l), has a supplemental guide-strip, D', added to it on the feed-out side of the cutter-head C", in order to widen it and guidethe lumherat'ter it has passed the latter entterliead. In order to hold thehunber more iirmly against the action of the tongning cutters on the shafts e c', the central guide, l), is provided with a grooved or recessed edge, 50, where the board comes against itat'ter passing the tonguing-cutters, as shown in Figs. 13 and Il, the recess in the edge of the guide being` fitted to receive the tongue formed upon the board M, and thus hold the latter steady and relieve the tongue of injurious pressure in its lrss'age forward under the planitig-cylinder and opposite the side cutter-head, c or c', to receive the groove on its opposite side. In order to further aid in holding the board more firmly when passing the tonguing-cutters, two boards being passed through the machine at the same time, I further employ, in advance of and behind these described tongning-eutters of thehorizontal shafts e c', the feed-rolls a2 a, one or both divided or made in two separate sections, 2O and 2l, one for each board, as shown in Figs. 4, 9; and I regard this as preferable, although a single roll may be employed, as heretofore described. laeh board being thus separately held down, there is greater certainty in the presser-roll holding down the edge of the board immediatelyin advance ot' the tonguingcutters than with a single roll. The inner ends of the shafts of the sections 20 and 2l of roll ci' are mounted in boxes It', fitted in grooves in a hanger, 71, depending from the crossgirt 22, the latter being mounted on the upper ends ofthe feed-roll standards 23 23 and extending across the machine from side to side. Springs are placed above these boxes in this dependent hanger to press them down in the usual manner, and the boxes are raised by screws 2t 24,0t' the ordinary construction. The rollsections .20 and 2l. thus have a yielding pressY ure upon the boards passing under them, to accommodate them tio different thicknesses of lumber. They also act more efficiently than an undivided roller in ease the two boards are so passed through the machine simultaneously that one bears against the central guide-strip on one side ot' it, while the other board on the other side of the central guide takes its bcaring against the outer side guide. rlhe difference in frictional resistance to the passage ot' the boards is in this case added to difference in their thickness.

rthe central vertical mateher-head, C, is constructed with a spindle attached tothe cutterhead, which is seated in an axial hole in the top of the shaft ofthe head, which carries its driving-pulley in the usual and well-known manner. \Vhen the machine is to be used as a single planer,the cutter-head and its spindle are withdrawn from their shaft, and the top of the latter beingbelow the surface of the plancrbed,itpresentsnoobstruetion to the planing of lumber as wide as the bed.

vWhen the horizontal shafts c e are provided with cutters to form tongues on boards on both sides of the guide I), however, and the critter'- head C3 is not employed, all that is necessary to convert the machine from a duplex to a single planer is to withdraw the shafts r2 and c', by means of their screws, upward and downward away from the bed and remove the een trai guide, I). The cutter-heads c and e/ can then be adjusted quite across the bed, toward or away from each other, in the usual manner, which would be impossible with one or more shafts of central vertical cutter-heads like C in the way of and between the former heads. The cuttershead c', Fig. 4, is thus adjusted in the usual manner bythe screw o. Its adjustnient, when the center guide, D, is in place in the machine in this manner, enables the operator to gage the width of the board to be matched and dressed on that side of the guide, and obviates the necessity oi' any readjustment of the guide or the tonguing-cutters on the IOO TIO

shafts e eon each side of it to accommodate i them to differentwidths of boards to be dressed and tongued and grooved by the machine.

My plan of mounting the tonguing-cutters upon the independent shafts e c instead of upon the planing-cylinders a a', so as to operate upon two boards at once, one on each side v of the guide D, not only permits of the machine being transformed into a single planer more readily, as before described, but it also insures a more perfect nish to the tongue, because the shafts are so close together above and below the board as to insure the tongues being cut alike on both sides, which is not always the case when the tongui ng-cutters are as far apart on opposite' sides of the board longitudinally thereof as the upper and lower planing cylinders, for instance, must be placed, because the warp, unevenness, or twist of the board varies its position slightly with relation to the guides at different parts of the edges of the same, and suiiiciently to impair the quality of a tongue cut on its opposite sides at such different points.

What I claim as new and of my invention l. The combination, in a wood-planing machine, of feed-rolls, the single long-surface planingcylinder a, extending across the machine bed, the guide-strip D, secured centrally and longitudinally upon said bed, and the horizontal shafts e e', extending from one side of said bed transversely across and above and below the same, and each provided at its inner end with two sets of cutters, c13 c, adapted to form tonguesv upon two boards simultaneously upon opposite sides of the said guide-strip D, substantially asdescribed.

2. The combination, in a wood-planing machine, of feed-rolls, the single long planingcylinder a, extending across the machine-bed, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts e e', extending from one side of said bed transversely across, above, and below the same, and each provided at its inner end with two sets of cutters, c13 c, adapted to form tongues upon two boards simultaneously upon opposite sides of the said guide-strip D, and the cuttersheads c c', adapted to form grooves upon the outer edges of said boards, substantially as described.

3. The combination, in a wood-planing inachine, of twoindependent pressure-rolls, 20 21, extending, respectively, part way across the lumber-supporting surface, the single long planingcyli'nder a, extending across the machine-bed, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts e e', extending from one side of said bed transversely across, above, and below the same, and each provided at its inner end with two sets of cutters, c13 c, adapted to form tongues upon two boards simultaneously upon opposite sides of the said guide-strip D, and the cutter-heads c c', adapted to form grooves upon the outer edges of said boards, substan-V tially as described.

4. The combination, in a wood-planing maplaning-cylinder c, extending across the in aehine-bed, the guide-stri p D, secured centrally and longitudinally upon said bed, the horizontal shafts e e', extending from one side of said bed transversely across, above, and below the same, and each provided nearits inner end wit-h two sets of cutters, c13 c, adapted to form tongues upon two boards simultaneously upon opposite sides of said guide-strip D, and the cutter-heads c c', provided with adjusting mechanism adapted to adjust their position nearer to or farther from said guide-strip D transversely of the machine-bed, substantially as described. v

V 5. rlhe combination, in a woodplaning machine, of the feed-rolls, the single long-surface planing-cylinder a, extending across the machine-bed, the guide-strip D, secured-centrally and longitudinally upon said bed, the horizontal shafts e c', extending from one side of said bed transversely across, above, and below the same, and each provided near its inner end with a set of cutters, c, adapted to form a tongue upon the inneredge of a board upon one side' of guide-strip D, and the side cutterhead, c, and side guide c3, each provided with adjusting mechanism adapted to adj ust its position nearer to or farther away from said,

guide-strip D transversely of the machinebed, substantially as described.

6. rlhe combination, in a wood-planing machine, of the feed-rolls, the single long-surface planing-cylinder c, extending across the bed of the machine, the guide-strip D, secured centrally and longitudinally upon said bed, and formed with guiding-edges for the lumber expanding outward from its center line toward thefeed-out end of the machine, the horizontal shafts e e', extending from one side of said bed transversely across, above, and below the same, and each provided with two sets of cutters, cl3 c, adapted to form tongues upon two boards simultaneously upon opposite sides of said guide-strip D, substantially as described.

7. rlhe combination, in a wood-planing machine, of the feed-rolls, the single long-surface planing-cylinder a, extending across the machine-bed, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts e e', extending from one side of said bed transversely across, above, and below the same, and each provided near its inner end with a set of cutters, el, adapted to form a tongue upon the inner edge of a boardV upon one side of the guide-strip D, and the side cutzontal shafts c c', extending from 'one side of said bed transversely across, above, and below the same, and each provided near its inner end with a set of cutters, c, formed and adapted to reduce the board to a predetermined width by removing its edge and cut a tongue upon the iinished inner edge of the same, in conjunction with the side guides, c2 c3, and cutter-head c, adapted to form a groove upon its opposite edge, substantially as described.

9. The combination, in a wood-planing machine, of the feed-rolls, the single long-surface planing-cylinder a, extending across themachine-bed, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts c c', extending from one side of said bed transversely across, above, and below the same, and each provided near its inner end with a set of cutters adapted to form a tongue upon the inner edge of a board pressing against said guide-strip D in its passage through the machine, the side cutter-head, c', adapted to form a groove upon the opposite side of said board, and the central cutter-head, C5, supplemental central guide-stripD, side cutter-head, c, and side guides, c2 c3, adapted to guide another board through said machine ou the opposite side of the guide-strip D and form the tongue and groove upon the edges of the same simultaneously with the first one, substantially as described.

10. The combination, in a wood-planing machine, of the side guides, c2 and c, and side cutterhead, c, moving ou guideways transversely of the machine-bed, and provided with independent adj usting-screws for adjusting the same thereon, the longitudinal shaft c, coupled together in sections or divisions, one of which sections or divisions is geared tothe adjusting-screws of each of said. guides and cutterhead, respectively, and independent crank or hand-wheel mechanism applied to each of said sections or divisions of said shaft c4, whereby the sections of the same may be coupled together and adjust said guides and cutter-head simultaneously, or one or more sections may be uncoupled and operated to adjust its guide or cutter-head independently of the others, substantiallyas described.

11. The combination, in a wood-planing machine, of the side guide c, the side cutterhead, c, and the side guide c2, made adjustable transversely of the machine upon guideways, and provided with screws operating to adjust them independently, respectively, and the shaft c, divided into sections, each sect-ion being separately geared to the adjustingscrews of one of said guides and said cutterhead, respectively, and the sleeve-couplings cS cm, uniting said sections of said shaft and forming bearings wherein one section may revolve upon and be supported by the other, substantially as described.

12. The combination,in a wood-planing machine, of the feed-rolls, the single long-surface planing-cylinder a., extending across the ma chine-bed, the horizontal shafts c c', extending from only one side of said bed transversely across, above, and below the same, each provided at its inner projecting end with a set of cutters, c, formed and adapted to reduce the board to a predetermined width and cut a tongue upon the inner edge ofthe same,in conjunction with the adjustable side guides, c2 c", and side cutter-head, c, made adjustable transversely of the machine-bed, and the latter adapted to form a groove upon the outer edge of the board, substantially as described.

13. The eombination,in awood-planing machine, of the feed-rolls, the single long-surface planing-cylinder,extending across the bed of the .'machine, the guide-strip D, secured centrally and longitudinally upon said bed, thel horizontal shafts c c',eXtending from one side of said bed transversely across, above, and below the same, cach provided near its inner end with aset of cutters,c,'formed and adapted to reduce the board to apredetermined width by removing its edge and eut a tongue upon the finished inner edge of the same, in conjunction with thc side guides, c2 c, and cutterhead c, made adjustable transversely of the machine-bed, and the latter adapted to form a groove upon the outer edge of the board, substantially as described.

14. The combination,in a planing-machine, of the feed-rolls, the single long-surface planing-cylinder ,extending across the bed of the machine, the tapering guide-strip D, secured centrally and longitudinally upon said bed,the horizontal shafts c c', extending from one side of said bed transversely across, above, and below thesame,each provided near its inner end with two sets of cutters, e13 c, adapted to form tongues upon the inner edges of two boards passing simultaneously through the machine and guided against the opposite edges of said guide-strip, substantially as described.

15. The combinatiomin awood-planing machine,o1" the single long planing-cylinder a,ex tending across the bed of the machine, the guide-strip D,secured centrally and longitudinally upon said bed, the horizontal shafts e c', placed in advance of said planing-cylinder, and each provided with two sets of cutters, c13 c, adapted to form tongues upon the inner edges of two boards passing simultaneously through the machine on opposite sides of said guide-strip, and the feed-roll a?, placed in advance of said shafts 'e e', and adapted to press the boards down upon the bed in advance of the same, substantially as described.

1G. rllhe combinatiomin a wood-planing machine, of the single long planing-cylinder a, extending across the bed ofthe machine, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts c e', placed in advance of said planing-cylinder, each provided with two sets of cutters, c13 c, adapted to form tongues upon the inner edges of two boards passing simultaneously through the machine on opposite sides of said guide-strip, the feed-.roll a2, placed in advance ITO of said shafts e e and divided into two sections, 21, adapted to independently press said boards downupon the bed in advance of the same, substantially as described.

17. The combination, in a Wood-planing machine, of the single long planing-cylinder a, extending across the bed of the machine, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts e e', placedin advance of said planingcylinder, each provided with two sets of cutters, c13 c, adapted to form tongues upon the inner edges of two boards passing simultaneouslythrough the machine on opposite .sides of said guidestrip, the feed-roll a2, placed in advance ofsaid shafts e e', and the feed-roll @placed behind said shafts and in advance of said cylinder a, each of said rolls being divided into two sections adapted tov independently press said boards' down upon the bed, substantially as described.

1S. The combination, in a planing-machine,

of the single long planing-cylinder a, extend ing across the bed of the machine, the guidestrip D, secured centrally and Vlongitudinally upon said bed, the horizontal shafts e e', placed in advance of said planing-cylinder, each provided with two sets of cutters, c13 e, adapted to form tongues upon the inner edges of two boards 4passing simultaneously through the machine onopposite sides of said guide-strip` the feed-rolls ai a3, placed in advance of and behind said shafts, and the side cutter-heads, c c', adapted to groove the outer edges of said boards, substantially as described.

19. The combination, in aplaning-n'lachine, of the single long planing-cylinders a ct, extending across the bed of the machine, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts f e e', placed in advance of said planingcyli11- ders, each provided with two sets of cutters, cl3 c, adapted to form tongues upon the inner rcylinder a', and the side cutterheads, c c', substantially as described.

20. The combination, in a wood-planing machine, of the single long planing-cylinder a, eX- tending across the vbed of the machine, the guide-strip D, secured centrally and longitudinally upon said bed, the horizontal shafts e e', placed in advance of said cylinder, each provided with two sets of cutters, e13 c, adapted to form tongues upon the inner edges of two boards passing simultaneously through the machine on opposite sides of said guide-strip, the adjustable side guides, c2 c3, the feed-rolls a3 a2, each divided into sections 2O 21, adapted to independently press upon and carry forward said boards, one bearing against said central guide-strip upon one side thereof and the other against said side guides, cZ c3, upon the other side of the central guide-strip, and the side cutter-heads, c c', adapted to groove the outer edges of said boards, substantially as described.

21. The combination, in a wood-planing machine, of the feed-rolls, the singlelong planing- Witnesses:

N. P. OoKING'roN. DAVID HALL RICE.

SOLOMON A WOODS. 

